Understanding the mark

The brandmark is your guarantee that a window meets the quality criteria of the Wood Window Alliance - standards that are independently audited.

To earn the right to become a member, a manufacturer must make windows which:

• Meet the minimum standards set out in BS 644, the main British Standard for wood windows, or equivalent standards from other countries
• Meet the performance standards for wind and weather resistance of BS 6375 Part 1
• Meet the minimum performance standards for operational aspects of BS 6375 Part 2, or equivalent standards from other countries
• Are accredited by an independent UK or European body to prove compliance with those standards
• Are manufactured from timber, sourced legally from sustainably managed forests
• Have service life warranties for durability, paint life, ironmongery and insulated glass units
• Meet or better the UK Building Regulations recommendations for energy efficiency

To be sure the windows you are specifying meet, or exceed, the Wood Window Alliance standards, look for the quality brandmark.

Not all the windows manufactured by Wood Window Alliance members necessarily qualify to carry the brandmark – for example, conservation or specific design requirements may take precedence over these standards.

However, membership  shows a company's commitment to producing high quality windows, and that you can rely on its products.